Modway Ardor Office Chair, Black ERGONOMIC SUPPORT AND COMFORT - Featuring a breathable mesh back, lower back lumbar support, and foam padded mesh seat, sit relaxed and posture perfect while seated in this adjustable office chair SUPERIOR CONSTRUCTION - Featuring a sturdy five-star nylon base, durable PP plastic frame and armrests, and a chair weight capacity of 331 pounds, Ardor offers reliable support for everyday use EASY MOBILITY - Sitting atop dual-wheel nylon casters with white accent rims, this office chair glides over both wood and carpet flooring with ease. Adjust seat height and move around with 360 swivel SYNCHRO TILT - Personalize seat and back angle tilt tension with the turn of a knob. Perfect for the home office computer desk, this comfortable black office chair allows for customization and support OFFICE CHAIR MEASUREMENTS - Overall Product Dimensions: 25"L x 25"W x 36 - 39"H; Seat Dimensions: 17.5"L x 19"W x 17.5 - 20.5"H; Armrest Height: 6.5"H; Backrest Dimensions: 18.5"H